Two-for-one twisting spindle



Feb. 13, 1968 G. FRANZEN TWO-FOR-ONB TWISTING SPINDLE Filed Feb. 2'7, 1967 V r1615 lyre-non.

United States Patent 3,368,336 TWO-FOR-ONE TWISTING SPINDLE Gustav Franzen, Neersen, Germany, assignor to Palitex Project-Company G.m.b.H., Krefeld, Germany Filed Feb. 27, 1967, Ser. No. 618,612 Claims priority, application Germany, Mar. 2, 1966, P 38,887 7 Claims. (Cl. 5758.67)

ABSTRACT OF THE DISCLOSURE The present invention relates to a two-for-one twisting spindle having a spindle rotor on which a winding-up bobbin carrier with a traversing thread guiding device is journalled and is adapted by means of a pair of magnets to be prevented from rotating. This spindle is characterizcd primarily in that the mandrel for supporting the winding-up bobbin is, pivotable eccentrically with regard to the axis of rotation of the spindle rotor while a cylinder extends around the traversing thread guiding means and the mandrel and is adapted to receive therewithin a completely wound up bobbin. Furthermore, there are provided means for rotating said cylinder independently of said spindle rotor while saidv mandrel is continuously urged in a direction toward the respective adjacent interior wall area of said cylinder.

The present invention relates to a two-for-one twisting spindle having a spindle rotor on which a winding-up bobbin carrier with a traversing device is journalled and is adapted by means of a pair of magnets to be prevented from rotating. 1

The working principle of two-for-one spinning or twisting spindles is generally based on'causing the threads to be twisted to follow, on their way from the doubling bobbin or the delivery bobbins, a path on which the thread is a plurality of times deviated by 90 or 180 so that the thread between two reversing pointsv on said path circumscribes a balloon-shaped path around the spindle shaft.

According to one embodiment of this principle, the thread is withdrawn upwardly or deviated in opposite direction from a doubling-delivery bobbin or two superimposed delivery bobbins which are non-rotatable relative to the spindle rotor and are journalled on the latter. In this connection, the thread is centrally passed through the hollow spindle shaft to thespindle rotor in which it is radially deviated. The thread then leaves the spindle rotor in radial direction with regard to the thread storing disc and on its way upwardly to the winding-up bobbin circles around said delivery bobbin or delivery bobbins in a balloon-shaped way;

According to another embodiment of the above mentioned working principle of two-for-one spinning or twisting spindles, the thread withdrawn from the delivery bobbin in upward direction is deviated in the opposite direction and circles around the delivery bobbin or bobbins in a balloon-shaped manner on its way to the spindle rotor into which the thread is radially introduced and then passes axially to the hollow spindle shaft in downward direction to the winding-up bobbin.

According to a third embodiment, a plurality of threads are together passed from delivery bobbins arranged on a bobbin creel axially from below through the hollow spindle shaft from which the threads leave radially through the spindle rotor. Thereupon, the thread circumscribes a balloon and passes through a thread guide arranged axially at the top. This thread guide deviates the thread into an opposite direction whereupon the "ice thread is wound up by a winding-up bobbin which is mounted on the spindle rotor and is by means of a pair of magnets prevented from rotating with the spindle rotor. The winding-up bobbin has a traversing device associated therewith.

It is an object of the present invention to provide a two-for-one spinning or twisting spindle of the last mentioned type, which will bring about a simplification of the drive of the winding-up bobbin.

It is another object of this invention to provide a twofor-one spinning or twisting spindle as set forth in the preceding paragraph, which Will eliminate the heretofore necessary transmissions or belt drives which convey the rotary movement of the spindle rotor through a transmission to the winding-up bobbin.

These and other objects and advantages of the invention will appear more clearly from the following specification in connection with the accompanying drawings, in which:

FIG. 1 is a diagrammatic section through a two-for-one twisting spindle with a cylinder mounted on the spindle rotor and adapted to be driven independently thereof while a winding-up bobbin carrier is prevented from rotating by a pair of magnets with the spindle rotor.

FIG. 2 is a section taken along the line II-II of FIG. 1.

FIG. 3 is a perspective illustration of the tiltable connection of the axially arranged thread guide with the rail carrying the traversing thread guide.

FIG. 4 diagrammatically illustrates the pole wheel of the driven cylinder with a magnetic chain associated therewith.

FIG. 5 diagrammatically illustrates a disc-shaped cage rotor on the driven cylinder with a stator extending around said rotor in conformity with the asynchronous motor principle for producing an electromagnetic rotating field.

The present invention is characterized primarily in that the winding-up bobbin carrier supports the windingup bobbin so that the latter is eccentrically movable parallel to the spindle axis and is freely rotatable while a cylinder surrounds the winding-up bobbin and the traversing device, said cylinder, independently of the spindle rotor, also being rotatably journalled on said spindle rotor and further being adapted to be driven while the winding-up bobbin is adapted to be pressed against the inner wall surface ofsaid cylinder.

This arrangement brings about that the cylinder forming the so-called protective pot will have a drive of its own which is independent of the spindle rotor, While the rotation of the cylinder is adapted to be conveyed to the winding-up bobbin engaging the inner wall surface of the cylinder. Winding-up bobbin and cylinder thus cooperate in the manner of a planetary gear transmission, while the winding-up bobbin carrier is by means of pairs of magnets prevented from rotating together with the spindle rotor or the driven cylinder.

According to a further development of the present invention, the movable cylinder may be equipped with a pole wheel adapted from the outside to be magnetically acted upon so that all the way around the driven cylinder there remains a free space in which the thread can move in the manner of a balloon and unimpededly about the cylinder.

With this embodiment, a magnetic chain may tangentially be moved past the pole wheel, and this magnetic chain will then not only move the pole wheel of a single driven cylinder but all of the cylinders of a row of adjacent spindles of a machine.

According to another embodiment of the present invention, the movable cylinder has a cage rotor around which a stationary stator extends at least partially similar to an asynchronous motor for producing an electromagnetic rotating field. In this way the operation is as far as its effect is concerned similar to that of a magnetic chain.

According to a further embodiment of the present invention, the winding-up bobbin carrier may be designed as circular disc having eccentrically linked thereto a tiltable yoke which carries the bobbin placing mandrel in a direction parallel to the spindle axis. The invention in this instance is furthermore characterized in that the placed on winding-up bobbin is by means of a spring engaging said yoke pressed against the inner wall surface of the cylinder. Such an arrangement brings about that with increasing thickness of the winding-up bobbin, its engagement with the inner wall surface of the cylinder and thus the movement of the winding-up bobbin will be maintained by the rotating cylinder.

According to the present invention, the circular disc may at its outer marginal portion support a rail parallel to the spindle axis while the magnet supporting the traversing thread guide is displaceable on said rail. Said magnet is adapted by means of a counter magnet arranged outside said cylinder and movable parallel to said rail to be moved by the length of the bobbin. This brings about that the traversing operation is independent of the speed of the winding-up bobbin and that therefore the winding-up method can be adapted to the respective y-arn type.

According to a further development of the invention, the maximum displacement stroke of the magnet carrying the traversing thread guide is limited by abutments on the rail and is variable in order to be able to adapt the traversing to the various bobbin lengths.

Referring now to the drawings in detail, the two-forone twisting spindle illustrated in FIG. 1 comprises the spindle rotor generally designated 1 with the hollow whorl 2. The thread storage disc 3 with the overflow plate 4 is connected to the hollow whorl 2. The threads 5 which may for instance be withdrawn from a bobbin creel pass from below axially through the whorl 2 and by means of the thread storage disc 3 are passed radially outwardly and move from the marginal area of the overflow plate 4 upwardly in the form of a balloon. During this balloon-shaped movement, the threads pass through the balloon restrainer 7 and a cylinder 8 forming a protective pot. The cylinder 8 is equipped with a pole wheel 9 which is freely rotatable about the pivot 10 and independent of the spindle rotor 1. Pole wheel 9 of cylinder 8 is journalled by means of anti-friction bearings 12 which in their turn are slipped upon the hub 11 of the winding-up bobbin carrier 13. Bobbin carrier 13 in its turn is freely rotatable about pivot 10 in view of its two anti-friction bearings 14. Arranged on the outer marginal portion of the pole wheel 9 are pole shoes 15 as can be clearly seen from FIG. 4. Said pole shoes 15 have associated therewith a magnetic chain 16 which moves past spindles arranged adjacent to each other and along a spindle row at the level of the pole wheel 9 whereby the pole wheel 9 will be rotated.

In distinction from the embodiment of FIG. 4, the pole wheel 9 may according to FIG. 5 be replaced by a disc-shaped cake rotor 18. In this instance, a stator 17 extends around the cage rotor 18. This stator similar to an asynchronous motor produces a rotating field which causes a rotation of the cage rotor 18 with the cylinder 8. For braking or stopping the cage rotor 18, a direct voltage instead of an alternating voltage is applied.

By means of a pivot 18a, a two-arm tilting lever 19 is eccentrically journalled on the winding-up bobbin carrier 13 which is designed in the form of a circular disc. Said two-arm lever has a longer arm and a shorter arm. The longer arm 20 has arranged thereon the creel mandrel 21 for the winding-up bobbin 22. The shorter arm 23 is engaged by one end of spring 24 the other end of which is connected at 25 to the winding-up bobbin carrier 13. The said spring 24 brings about that the winding-up bobbin 22 will always engage the inner wall surface 26 of the cylinder 8 which in view of its rotation also rotates the winding-up bobbin 22 so that the thread is wound upon the winding-up bobbin 22.

The cross-Wise winding up is effected by the aid of the traversing thread guide 27 mounted on the magnet 28. Magnet 28 is displaceably arranged on a rail 29 which is supported by the marginal area of the winding-up bobbin carrier 13 and extends parallel to the spindle axis. The displacement stroke of the magnet 28 which carries the traversing thread guide 27 is limited with regard to the winding-up bobbin carrier 13 by means of the abutment 30 and at the other end by means of the abutment 31 with the thread guide 32. In this connection it is provided that the location of the abutment 31 is variable as to height so as to be adapted to the level of the winding-up bobbin 22. The thread guide 34 is tiltably inserted into the free end of rail 29 which may be designed in the form of a plug 33 as shown in FIG. 3. Thread guide 34 by .means of the radial pin 35 will when in operative position engage the cutout 36 and is adapted when withdrawing pin 34 from the cutout 36 to be turned laterally so as to permit withdrawal of bobbin 22 from mandrel 21 in upward direction.

As will be seen from FIG. 1, the thread 5 which following a balloon shape circles around the cylinder 8 passes above the spindle into the thread guiding tube 37 at the end of the thread guiding yoke 34 and moves through said tube 37 and subsequently through the thread guide 32 on the abutment 31 and over the deviating roller 38 on the thread guide 27 which under light spring pressure engages the wall surface of the winding-up bobbin 22. For purposes of carrying out a winding up operation, the thread 5 is placed in the slot 39 of the thread guide 27.

The traversing movement is imparted upon the traversing thread guide 27 by an upward and downward movement of the holding magnet 28 on rail 29. This movement is effected by a corresponding upward and downward movement of the counter magnet 40 which for instance may be supported by an upward and downward moving rail carrying a plurality of magnets 40 respectively associated with a plurality of adjacent spindles of a machine.

As will be evident from FIG. 1, the cylinder 8 which is supported by the pole wheel 9 with the pole shoes 5 not only forms the driving cylinder for the winding-up bobbin 22 but is also a protective pot adapted to receive the winding-up bobbin 22 and the entire traversing device. In this way the bobbin 22 and the traversing device are protected toward the outside while at the same time it is assured that the thread 5 which circulates in a balloonshaped manner can unimpededly within the balloon restrainer 7 move in the cylindrical gap 6.

In view of the vertical arrangement of the winding-up bobbin 22, the thread can be wound thereupon to a considerable extent because the traversing device requires only a relatively small space. FIG. 2 illustrates in dotdash lines 22' the approximate maximum diameter of the winding-up bobbin 22.

The embodiment according to the present invention yields a particularly simple drive for the winding-up bobbin inasmuch as the cylindrical protective pot is directly usable as drive and takes over the function of the friction-traversing roller which is required with heretofore known two-for-one spindles of the type involved and which with this known type of spindles is driven by the spindle rotor through a special transmission which latter is frequently liable to disturbances, particularly in view of the collection of lint and similar impurifications.

It is, of course, to be understood that the present invention is, by no means, limited to the particular arrangements and elements shown in the drawings but also comprises any modifications within the scope of the appended claims.

I claim:

1. A tWo-for-one twisting spindle, which includes a spindle rotor, bobbin carrier means supported by said spindle rotor and adapted to be held stationary while having associated therewith traversing thread guiding means, lever means pivotally supported by said bobbin carrier means, mandrel means supported by said lever means for rotatably supporting a bobbin, said lever means being operable to pivot said mandrel means eccentrically with regard to the axis of rotation of said spindle rotor, a cylinder extending around said traversing thread guiding means and said mandrel means and adapted to receive therewithin a fully wound up bobbin, said cylinder being supported by said spindle rotor while being freely rotatable relative thereto, spring means operatively connected to said lever means and continuously urging said mandrel means in a direction toward the respective adjacent inner wall area of said cylinder so as to cause frictional engagement of a bobbin carried by said mandrel means with said cylinder, and means for rotating said cylinder independently of said spindle rotor.

2. A two-for-one twisting spindle according to claim 1, in which said cylinder is equipped with a magnetically operable pole wheel.

3. A two-for-one twisting spindle according to claim 2, which includes a magnetic chain tangentially movable by and within the magnetic range of said pole wheel.

4. A two-for-one twisting spindle according to claim 1, in which said cylinder is provided with a cage rotor, and which includes stator means stationarily arranged and at least partially surrounding said cage rotor in magnetically spaced relationship thereto and operable to provide an electromagnetic rotary field.

5. A two-for-one twisting spindle according to claim 1, in which said bobbin carrier means includes a circular disc having lever means eccentrically pivotally connected thereto.

6. A two-for-one twisting spindle according to claim 5, which includes r-ail means supported by said disc at the marginal area thereof and extending substantially parallel to the axis of said mandrel means, magnetic means detachably mounted on said rail means and carrying said traversing thread guiding means, and additional magnetic means arranged outside said cylinder within the magnetic range of said first mentioned magnetic means, said additional magnetic means being movable substantially parallel to said rail means for displacing said first mentioned magnetic means thereon over a length corresponding to the height of the respective bobbin to be supported by said mandrel means.

7. A two-for-one twisting spindle according to claim 6, which includes adjustable abutment means on opposite end portions of said rail means for limiting the reciprocatory movement of said traversing thread guiding means.

References Cited UNITED STATES PATENTS !2,684,566 7/1954 Roberts 57-58.76 3,060,670 10/1962 Starnes 5758.52 XR 3,066,472 12/1962 Klein 57-58.65 XR 3,172,247 3/1965 Chapus et a1. 57-5865 XR FRANK I. COHEN, Primary Examiner.

W. H. SCHROEDER, Assistant Examiner. 

